Pedido de licença compulsória
#20.1
12/20/1983
RPI 687
The letters patent expired on 07/20/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 12/20/1983. We update with every new RPI gazette, published weekly.
Applicants
AMERICAN OPTICAL CORP
Inventors
L. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#20.1
12/20/1983
RPI 687
12/06/1983
RPI 685
#20.1
10/18/1983
RPI 678
#20.2
07/26/1983
RPI 666
#16.1
07/27/1982
RPI 614
#13.1
03/02/1982
RPI 593
#9.1
10/20/1981
RPI 574
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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